The second line descends from another Andrew,Andreas
KUECHLINE (1755-1826), who settled in the Schoenerville area of Lehigh County, Pennsylvania.
So far, many have speculated about but none have proven Andrea's connection
to the other line. So, at least for now, his descendants are kept separately
from the others.

The third line, known as the Canadian KATHLINEs, started withPhilip
KEITHLAND (c1747- aft 1792), A Loyalist who moved from New Jersey to New Brunswick, Canada,
it's quite possible that Philip is somehow related to the main line.